quintessence vs substantial

quintessence

noun
  • A pure substance. 

  • A thing that is the most perfect example of its type; the most perfect embodiment of something; epitome, prototype. 

  • The fifth alchemical element, or essence, after earth, air, fire, and water that fills the universe beyond the terrestrial sphere. 

  • The essence of a thing in its purest and most concentrated form. 

  • A hypothetical form of dark energy postulated to explain observations of an accelerating universe. 

verb
  • To reduce to its purest and most concentrated essence. 

substantial

noun
  • Anything having substance; an essential part. 

adj
  • Most important; essential. 

  • Not imaginary; real; actual; true; veritable. 

  • Having a substance; actually existing. 

  • Corporeal; material; firm. 

  • Possessed of goods or an estate; moderately wealthy. 

  • Satisfying; having sufficient substance to be nourishing or filling. 

  • Large in size, quantity, or value; ample; significant. 

  • Having good substance; strong; stout; solid; firm. 

How often have the words quintessence and substantial occurred in a corpus of books? (source: Google Ngram Viewer )